Stitch-transferring device for knitting-machines.



No. 836,058. PATENTED NOV. 13, 1906.

- J. VAUGHAN.

STITCH TRANSFERRING DEVICE FOR KNITTING MACHINES.

APPLICATION FILED JUNE 14. 1905.

4 SHEETS-SHEET 1 STITCH TRANS J. VAUGHAN. PERRING DEVICE FOR KNITTING MACHINES.

' APPLICATION FILED JUNE 14. 1905.

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PATENTED NOV. 13, 1906.

v No. 836,058. PATENTBD NOV. 13,1906.

4 Y J. VAUGHAN. STITCH TRANSFERRING DEVICE FOR KNITTING MACHINES.

APPLICATION IiLED JUNE 14, 1905. I

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J. VAUGHAN. sures TRANSFBRRING DEVICE PORKNITTING MACHINES.

APPLIGATIONIPILED mm 14, 1905.

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ding stitches or otherwise tain in the manner and partly in elevation,

UNITED STATES PATENT OFFICE.

JOHN VAUGHAN, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO ELIZA VAUGHAN. F PHILADELPHIA, PENNSYLVANIA.

STlTCH-TRANSFERRING DEVICE FOR KNITTING-MACHINES.

To all whom it ,mayboncern:

Be'it known that I, JOHN VAUGHAN, a citizen ofthe United States, residing in'Philadelphia, Pennsylvania, have invented certain Improvements in Stitch-Transferring Devices for Knitting-Machines, of which the following is a specification.

The object of my invention is to effect the nick and accurate transfer of stitches from t e needles of one of the needle-carriers of a rib-knitting machine to the needle of the other needle-carrier, so as to change from rib-knitting to plain knitting without dropinterfering with the integrity of the fabric. This object I athereinafter set forth, reference being had to the accompanying drawings, in which- Figure 1 is a v ew, partly in vertical section of sufficient of a ribkni'tting machine to illustrate my present invention. Fig. 2 is a plan or top view of the machine. Fig. 3 is a plan view showing the cams of the dial-cam plate and also the cams of an outer cam-ring for operating the transfer-needles. Figs. 4 and 5 are views of the cams of the cylinder-cam box.

Fig.' 6 is a plan view of part of the machine, showing the relation of the three sets of needles one to another; and Figs. 7' to 12, inclusive, are views illustrating-the operation of transferring a stitch from a dial-needle to a cylinder-needle "of the machine. a

Referring first to Fig. 1 of the drawings, 1 represents the fixed cylinder of a machine having the usualvertically-guided needles w, which are vertically reciprocated by means of cams mounted upon a cylinder-cam box 2, which is mounted upon a bevel-wheel 3, turning in suitable, bearings in the bed-plate 4 and having rotary movement imparted to it in a manner customary in machines of this Jentrally disposed within the cylinder 1 andabove, the top of the same is a needledial 5, carrying the horizontally guided dialneedles :c,1which are radially reciprocated by means of cams on the under side of a dial-cam box 6, the latter being secured to a stem or spindle 7, depending from a yoke or arch 8, which is rotated in unison with the dial-cam box 2 in the manner described hereinafter;

The needle-dial 5 has a depending hub which is supported upon a collar '9 at the Specification of Letters Patent. A Application filed Jun 14,1905. Serial No. 265,249.

' of the needle-dial independently o strict the movement of said PatentediNov. is, 906.

lower end of the stem or spindle 7, suitable means being provided for preventin rotation dle-cylinde'r Surrounding'and secured to the upperportion of the needle-cylinder is an annular needle-ring 10, which is grooved for the reception and guidance of a seriesof horizontally guided needles 3;, which are reciprocated by means of cams on the under side of an annular cam-ring 11, which is supported verticallyon the needle-ring 10, has studs 12, supporting the arch. or yoke 8, and driven in unison with the cylinder-cam bo'ieZ by means ofan arm 13- on the latter engaging with lugs or cars 14, projecting irom the peripheral portion of the camring 11..

The dial-cam plate hasthe usual cams for projecting the dial-needles so as to cause them to receive at the knitting-point the yarn from a suitably-located yarn-guide 15, one of said dial-neeclle-operating cams 16 be- .the nec ing pivoted so that it can be swung outwardly into operative position, as shown in Fig. 3,

so as to project the needles,for inwardly to an inoperative position, so as to fail to project the same. The dial-cam plate also has another set of cams 17 for imparting reciprocating movement to the dialneedles at the transfer-point, which is some distance in the rear of .the'knitting-point. The cylinder-cam box has a set of cams 19 for properly operating the cylinder-needles i at the knitting-point and another set of cams 20 for projecting the cylinder-needles at the transfer-point.

The annular cam-ring 11 has two sets of cams 2]. and 22, the cams 21 servin when prqperlyv adjusted to project the need es y to an intermediate point andthe cams 22 when properly adjusted serving to fully project the needles y and then to retract the-same. Each of the sets of member 23, shown in the operative positlon in Fig. 3, but capable of being retracted, so as to retain the needles y always in the re tracted position whendesired.

cams 21 and 22 has a swinging IOO -Mounted upon the stem or spindle 7 is a lever 24 with depending pin 25, which by contact with the arch or yoke 8 restrictsmovement of the arm 24 in one direction, an arm 26, secured to theback of the dial-cam plate, serv ing by contact with one of the posts 12 to rearm in the oppo; .f

site direction, the lever 24b'eing secured to the stem 7,"so that any movement imparted to the same will be transmitted to the dial cam-plate 6, and vice versa. The needles y are not guided radially in the annular ring 10, but are inclined slightly in respect to the radial paths of the dial-needles be. I The cams 23 and lever 24 may be moved from one position to another by any avail able means, those shown in the drawings being the usual duplex levers to be operated by Q: contact with a disk. under control of a tern-chain. as follows, reference being had to Figs. 2 and These may be briefly described 3.: One arm of the lever 24 is slotted for the reception of a pin on a lever '31, which is hungto a stud 32 on the arch 8, and has a slot 33 for the reception of a pin 34 one lever 35, the latter being hung to anotherstud on said [arch 8, whereby contact of a disk 36 with the lever 31 will move-the lever 24 in one direc tion and contact of said disk with the other lever will move the said lever 24 in the opposite direction. Each of the cams 23 is so cured tola pivot-stud 40, which has-an arm 41 with slot 42 for the reception of a pin 43 on a lever 44-, hung to a pin 45 on the'cam-ring 11 and having a slot 46 for the reception of a 'Stud 47, which limits the movement of said lever. When therefore the arm 41 strikes a disklocated' below the disk 36, the cam 23 -.will be movedin one direction, and when the leverl44 strikes the said lower disk the cam Will be moved in the opposite direction. The

back of the cam 23 isacted upon by a tongue. "'50-, secured to a pivot-stud 51, which is mounted so as to be free to turn in the cam- .ring 11, and is acted upon by a spring 52, tending to maintain the point of the tongue constantly in contact with the back of the cam.

In the ordinary operation of the machine the dial-cam plate bears such relation to thecylinder-cam box that both the dial-needles limited extent by the lever 31 acting upon the arm 24 and moving the same until 'the arm 26 comes into contact with one of the posts 12. .As a consequence of this the dialneedles 00 will not be projected so as to receive yarn from the guide 15, but will be fully projected-at a point in the rear of said guide. Atthe same time that this operation is performed the swinging cams 23 are moved so patas to put the needles y into operation, the result being that indicated in Figs. 7 to 12 of the drawings. WVhen the dial-needle ac is fully projected, it will slip its stitch back of the latch, as shown in Fig. 7', and when retracted will close the latch and cause the stitch to ride up 'on the same, as shown in Fig. 8. When in this position, a needle y is projected, so as to enter the stitch, as shown in Fig. 8, and the dial-needle m is then retracted by the cams 17, so as to cast its stitchpwhich falls into the hook of the needle y, .as shown in Fig. 9. v The needle'yis then retracted, so as to draw the stitch over the top of the adjoining cylinder-needle w, this being the purpose of the angular arran ement of the needles y, for as the dial-need es and the cylinder-needles alternate with each other or occupy difierent vertical planes some lateral deflection of the stitch is neces sary in order to bring it into the plane of the cylinder-needle. As soon as the needle yhas been retracted the cylinder needle w is raised by the cams 20, so as to enter the stitch carried by said needle y, as shown in Fig. 10, and

. is then depressed, as shown in Fig. 11. Meandial equipped with latch-needles and having an annular needle-ring also equipped with latch-needles, it will be evident that my invention is applicable as well to machines having spring-beard needles and to machines in which the needle-cylinder, needle-dial, and transfer-needle ring rotate and operate in conjunction with stationary cam-carriers. It is also evident that my invention can be embodied in machines of different type from the cylinder and dial machinethat is-to say, machines having straight needle-beds disposed at an angle to each other. Hence in some of my claims I have used the term carrier instead of the term cylinder, dial, or ring.

Without limiting myself, therefore to the details "of the construction which I have illustrated in the drawings, I claim and desire to secure by Letters Patent- 1. The combination of a pair of needlecarriers of a rib-knitting machine, their use dles, means for knitting upon the latter, a supplementary carrier havin .stitch-transierring devices, means where y the transferring-needles are first operated to cast their stitches onto said transfer devices,

means whereby the latter are then operated to move such transferred stitches into the path of the receiving-needles, means for operating said receiving-needles to engage sai stitches, and means for then operating the transfer devices to cast the stitches onto the receiving-needles.

2. The combination of the two sets of needle-carriers of a rib-knitting machine and their needles, a carrier having a set of transfer devices, a yarn-guide operating in conjunction with both sets of knitting-needles, and means for shifting the cams which act upon one set of needles so that the latter will not receive yarn from said yarn-guide but will be projected and then retracted at another point, so that the stitches will close the latches and ride up on the same for receiving the transfer-needles.

3. The combination of the two sets of nee dle-carriers of a rib-knitting machine and their needles, a carrier having a set of transfer devices, a yarn-guide o crating in conjunction with both sets of 'tting-needles,

and means for shifting the cams which act upon one set of needles so that they will not receive yarn from said yarn-guide but will be rojected and then retracted at another point,

' so that the stitches will close the latches and ride up on the same for receiving the transferneedles, and means for further retracting said needles, so that their stitches will be cast off onto said transfer devices.

4. The combination of the two needle-carriers of a rib-knitting machine and their needles, and means for knitting dles, with a carrier having a set of transfer devices disposed to operate slantwise to the lanes of movement of the needles with whose stitches they engage.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

I JOHN VAUGHAN.

Witnesses: I

WALTER CsnsM, Jos. H. KLEIN.

upon said nee- 

